All of your questions can literally be answered with history, as this type of stuff has already happened. Long story short, since others have typed it here as well, Reagan as president fired all 11k ATC workers and forced the Air Force to help pick up the slack while they looked for more workers. Some of those ATC workers got rehired, but it essentially prevents ATC from having any control of their careers.

Maybe get off your computer chair once in a while and actually go outside and visit these places you know absolutely nothing about. I just came back from Honduras for a few months. And guess what I’m still alive and well and it was one of the best, humbling trips I’ve ever taken and I’m hugely grateful for the experience. See that? You actually learn something when you travel, as opposed to being a toxic know-nothing online. If no one else already told you today, go fuck yourself and have a nice day.

They are federal employees. Federal employees can’t go on strike. Shit is fucked up. The US hates it’s labor force and that’s by design.